Troubleshooting Schedule - Husqvarna R 120S Manual De Instrucciones

Problem
Engine does not start
Starter motor does not turn over the
engine
Engine does not run smoothly
Engine seems to have no power
Engine overheats
Battery does not charge
Machine vibrates
Uneven mowing
26 –
English

Troubleshooting schedule

Cause
There is no fuel in the fuel tank
Spark plug defective
Faulty spark plug connections or interchanged cables
Dirt in the carburetor or fuel line
Starter motor does not turn over the engine
Battery discharged
Bad contact between the cable and battery
Lift lever for cutting unit in wrong position
Main fuse blown.
Ignition lock faulty
Brake not activated.
Faulty starter motor
Faulty spark plug.
Carburettor incorrectly set
Air filter clogged
Fuel tank vent blocked
Ignition key defective
Dirt in the carburetor or fuel line
Choking or incorrectly adjusted throttle cable
Air filter clogged
Spark plug defective
Dirt in the carburetor or fuel line
Carburettor incorrectly set
Choking or incorrectly adjusted throttle cable
Engine overloaded
Spark plug defective
Air intake or cooling flanges blocked
Fan damaged
Too little or no oil in engine
Ignition defective
One or more battery cells faulty
Poor contact on the battery terminal cable connectors
Blades are loose
Engine is loose
One or more blades unbalanced, caused by damage or poor balancing after
sharpening
Blades blunt
Long or wet grass
Cutting unit skew
Grass blockage under hood
Different tyre pressures on right and left sides
Over-speeding
Engine speed too low
Drive belt slipping